# mittwald_sftp_user_update

Update an existing SFTP user.

Agent View of the PolicyLayer registry record for `mittwald_sftp_user_update`. HTML page: https://policylayer.com/tools/mittwald-mcp-server/mittwald-sftp-user-update

## Facts

- Tool: `mittwald_sftp_user_update`
- Server: Mittwald MCP Server (`mittwald/mcp-server`) — https://policylayer.com/tools/mittwald-mcp-server.md
- Homepage: https://github.com/mittwald/mcp-server
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "mittwald_sftp_user_update",
    "arguments": {}
  }
}
```

## Why mittwald_sftp_user_update is rated Medium

This tool modifies SFTP user configurations, which is a reversible write operation. However, it affects critical authentication and access control settings, warranting high severity. Updating SFTP users could grant or restrict access to server resources, potentially affecting application availability and data confidentiality, but the changes are not irreversible (users can be reconfigured or restored).

From the tool's own definition: "Tool name contains 'update' and description states 'Update an existing SFTP user', indicating modification of existing authentication credentials and access controls."

## Use case

AI agents use mittwald_sftp_user_update to create or update resources in Mittwald MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mittwald MCP Server environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mittwald MCP Server:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "mittwald_sftp_user_update": {
      "limits": [
        {
          "counter": "mittwald_sftp_user_update_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Mittwald MCP Server (171)

- `mittwald_app_uninstall` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-uninstall.md
- `mittwald_backup_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-backup-delete.md
- `mittwald_backup_schedule_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-backup-schedule-delete.md
- `mittwald_container_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-delete.md
- `mittwald_context_reset_session` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-context-reset-session.md
- `mittwald_cronjob_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-cronjob-delete.md
- `mittwald_database_mysql_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-database-mysql-delete.md
- `mittwald_database_mysql_user_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-database-mysql-user-delete.md
- `mittwald_domain_virtualhost_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-domain-virtualhost-delete.md
- `mittwald_extension_uninstall` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-extension-uninstall.md
- `mittwald_mail_address_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-mail-address-delete.md
- `mittwald_mail_deliverybox_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-mail-deliverybox-delete.md
- `mittwald_org_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-org-delete.md
- `mittwald_org_membership_revoke` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-org-membership-revoke.md
- `mittwald_project_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-project-delete.md
- `mittwald_registry_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-registry-delete.md
- `mittwald_sftp_user_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-sftp-user-delete.md
- `mittwald_ssh_user_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-ssh-user-delete.md
- `mittwald_stack_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-stack-delete.md
- `mittwald_user_api_token_revoke` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-user-api-token-revoke.md
- `mittwald_user_ssh_key_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-user-ssh-key-delete.md
- `mittwald_volume_delete` — Destructive — https://policylayer.com/tools/mittwald-mcp-server/mittwald-volume-delete.md
- `mittwald_app_install_wordpress` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-install-wordpress.md
- `mittwald_app_open` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-open.md
- `mittwald_app_ssh` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-ssh.md
- `mittwald_app_upgrade` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-app-upgrade.md
- `mittwald_container_recreate` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-recreate.md
- `mittwald_container_restart` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-restart.md
- `mittwald_container_run` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-run.md
- `mittwald_container_start` — Execute — https://policylayer.com/tools/mittwald-mcp-server/mittwald-container-start.md
- …and 141 more: https://policylayer.com/tools/mittwald-mcp-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=mittwald-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/mittwald-mcp-server